Driving mechanism in cinematograph apparatus



L. GQLDHAMMER DRIVING MECHANISM IN CINEMATOGRAPH APPARATUS Filed Dec. 21, 1928 fig] m VENTOR LEO GOLD/HAMMER,

May 16, 1933.

Patented May 16, 1933 UNITED "STATES PATENT OFFIOE LEO GOLDHAMMIER, OF MUNICH, GERMANY, ASSIGNOR TO AGFA ANSOO CORPORATION,

OF BINGHAMTON, NEW YORK, A CORPORATION OF NEW YORK DRIVING MECHANISM IN CINEMATOGRAPH AIPPARATUS Application filed December 21, 1928, Serial No. 327,710, and in Germany January 11, 1928.

My present invention relates to cinematographic apparatus in which a film band is caused to travel between a windowed member and a gate which can be opened and closed by movement relatively to the window; more particularly it relates'to a specific structure in the feeding mechanism for motion picture film apparatus in which a claw, engaging and advancing a film strip, is so mounted that the operation of opening the gate moves the claw into an inoperative position and vice versa.

A further object of the invention consists on an eccentric axis on a wheel or disc of the motor, is in feeding engagement with. the perforations in the film. When the gate is opened the lever is turned against the action typical form of the invention reference is had to the accompanying drawing in which Fig. 1 is an elevation showing part of one of the plates that carry the clockwork motor,

to which plate the film windowand gate are fixed, the gate being-shown in closed position Fig. 2 is a like view, in which the film gate I is shown open and the claw out of action,

Fig. 3 .is a plan of Fig. 1.

Referring to Fig. 1 a film guide through which a film strip is to be advanced is formed by the film gate 1 and thewindowed member 11 T The film gate 1 can turn on the bolt 2 and is kept in closed position by the spring pin 3. The lever 4: is mounted to turn on pivot 5;

it has a bent projection 6, which is pressed against the gate 1 by action of the spring 8 on the pin 7 carried by the lever. The claw 9 carries a pin 12 which enters an eccentric hole in the flywheel 14, and also a pin 13 which engages in a slot 15 in the lever 4. When the gate is opened (see Fig. 2) the claw 9 is turned on the axis of pin 12 by the action of lever 4, so that it can no longer engage I 'the film 10, which can then be moved from the windowed member 11. The claw 9 is inserted in the mechanism with its pins 12 and 13 free in the eccentric hole 14 and slot 15 respectively, and is held in place by a plate 17 fixed, at a certain distance, to the plate 16 that carries the clockwork motor.

I claim:

1. In a driving mechanism or cinemato- 7 graphic apparatus a structure constituting a guideway for a film band including a windowed member and a gate, mechanisms comprising a film engaging member having in its operative position a normal path of move- 7 5 ment traversing said guideway for engaging and advancing a film band there-through, said film-engaging member being operatively' connected .to the film gate, 50 that opening of the gate moves the film-engaging member 30 away from the film.

2. In a driving mechanism for cinemato-' graphic apparatus. a structure constituting a guideway for a film band including a windowed member and a gate, mechanisms comprising a film engaging member having in its operative position a normal path of movement traversing said guideway for engaging and advancing a film band there-through, said film-engaging member being operatively connected to the film gate, so that opening of the gate moves the film-engaging member away from the film and a shutting movement removes the engaging member into its operative position. 95

3. In a driving mechanism for cinematoe graphic apparatusa structure constituting a guideway for a film band including a windowed member and a gate. mechanisms comprising a film engaging member having in its operative position a normal path of moveably mounted on an eccentric axis of the ment traversing said guideway for engaging flywheel of the motor and held in operative and advancing a film band there-through, position by a cover plate.

said film engaging member being movable out of its normal path of movement, and a lever actuated by the opening movement of the gate consisting of one single-piece to move said film engaging member out of its normal path of movement.

4. In a driving mechanism for cinematographic apparatus a structure constituting a guideway for a film band including a windowed member and a gate, mechanisms comprising a film engaging member having in its operative position a normal path of movement traversing said guideway for engaging and advancing a film band there-through, said film engaging member being movable out of its normal oath of movement and removable into the latter, and a lever actuated by the opening and the closing movement of the gate consisting of one single piece to move and to remove said film engaging member out of and back to its normal path of movement.

5. In a driving mechanism for cinematographic apparatus a structure constituting aguideway for a film band including a windowed member and a gate, mechanisms hav-' ing a cycle of movements and including a claw member having in its operative position a normal path of movement traversing said guideway for engaging and advancing a film band there-through, said film-engaging member being operatively connected to the film gate, so that opening of the gate moves the claws away from the film.

6. In a driving mechanism for cinematographic apparatus a structure constituting a guideway for a film band including a windowed member and a gate, mechanisms having a cycle of movements and including a claw member having in its operative position a normal path of movement traversing said guideway for engaging and advancing a film band there-through, and a lever device operatively connected with the film gate and the claw member, so that opening of the gate moves the claws away from the film.

7. In a driving mechanism for cinematographic apparatus a structure constituting a guideway for a film band including a windowed member and a gate, mechanisms having a cycle of movements and including a claw member having in its operative position a normal path of movement traversing said ideway for engaging and advancing a film and there-through, and a lever connected with the claw member in slot and pin connection and provided with a nose which is actuated by the gate upon an opening movement of the latter.

8. In a driving mechanism for cinematographic apparatus a structure according to claim 6 in which the claw member is remov- In testimony whereof, I affix my signature.

LEO GOLDHAMMER. 

